2021233990440 has 128 divisors (see below), whose sum is σ = 7077390888960. Its totient is φ = 452166622464.

The previous prime is 2021233990409. The next prime is 2021233990453. The reversal of 2021233990440 is 440993321202.

It is a super-2 number, since 2×2021233990440² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25558722 + ... + 25637681.

It is an arithmetic number, because the mean of its divisors is an integer number (55292116320).

Almost surely, 2^{2021233990440} is an apocalyptic number.

2021233990440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021233990440 is an abundant number, since it is smaller than the sum of its proper divisors (5056156898520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2021233990440 is a wasteful number, since it uses less digits than its factorization.

2021233990440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51196471 (or 51196467 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 39.

The spelling of 2021233990440 in words is "two trillion, twenty-one billion, two hundred thirty-three million, nine hundred ninety thousand, four hundred forty".